# NTSB investigations: Powerplant sys/comp malf/fail

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 11 of 13 · 628 cases

## Cases, newest first

- [NTSB ERA11IA521](https://openairdocs.org/ntsb/ERA11IA521.md): Beech V35 · New Haven, CT · Incident · No injuries · Incident investigation · Final report · Sep 18, 2011 · N275BM · Minor damage
  > The in-flight fatigue failure of the engine’s crankshaft, which resulted in the separation of the forward portion of the crankshaft and the propeller.
- [NTSB WPR11GA431](https://openairdocs.org/ntsb/WPR11GA431.md): Bell 205 · Tehachapi, CA · Accident · Minor injuries · Final report · Sep 4, 2011 · N205WW · Substantial damage
  > The pilot's inability to adequately execute an emergency autorotation due to the flight's low altitude during external load operations, which resulted in a hard landing. Contributing to the accident was a torsionally overstressed tachometer shaft, which sent…
- [NTSB ERA11LA483](https://openairdocs.org/ntsb/ERA11LA483.md): Durling James RV-6A · Hollywood, FL · Accident · Minor injuries · Limited investigation · Final report · Sep 3, 2011 · N241BD · Substantial damage
  > Particulate ingestion from the engine, which resulted in the malfunction of the propeller governor during the airplane’s initial climb.
- [NTSB WPR11LA423](https://openairdocs.org/ntsb/WPR11LA423.md): Arrow Falcon Exporters UH-1H · Stockton, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 2, 2011 · N205PJ · Substantial damage
  > A total loss of engine power due to the separation of a tooth from the starter-generator drive gear, which resulted in failure of the engine oil pump and subsequent oil starvation.
- [NTSB CEN11LA568](https://openairdocs.org/ntsb/CEN11LA568.md): Quad City Challenger · Granbury, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 16, 2011 · N979JP · Substantial damage
  > The leak in the plastic connectors in the fuel lines, which resulted in decreased engine power during the initial climb.
- [NTSB CEN11LA566](https://openairdocs.org/ntsb/CEN11LA566.md): Air Tractor AT-400 · Nelson, NE · Accident · No injuries · Limited investigation · Final report · Aug 11, 2011 · N3659N · Substantial damage
  > Failure of the fuel control unit's spool cap bearing for reasons that could not be determined during extensive postaccident examination, and the pilot’s decision to shut the engine down without sufficient altitude and distance to reach the runway.
- [NTSB CEN11LA563](https://openairdocs.org/ntsb/CEN11LA563.md): Grumman Acft ENG Cor-Schweizer G-164A · Mansfield, SD · Accident · No injuries · Limited investigation · Final report · Aug 10, 2011 · N127FC · Substantial damage
  > The loss of engine power due to debris in the engine air intake system.
- [NTSB ERA11LA461](https://openairdocs.org/ntsb/ERA11LA461.md): Piper PA-46-310P · Elizabethtown, NC · Accident · No injuries · Limited investigation · Final report · Aug 6, 2011 · N469CC · Substantial damage
  > The improper securing of a “B” nut on the power turbine control (Py) line by unknown maintenance personnel, which resulted in a total loss of engine power. Contributing to the accident was the pilot's failure to use the manual fuel override switch.
- [NTSB CEN11LA491](https://openairdocs.org/ntsb/CEN11LA491.md): Beech C35 · Medina, OH · Accident · No injuries · Limited investigation · Final report · Jul 20, 2011 · N1883D · Substantial damage
  > The loss of engine power due to fuel starvation due to an age-related failure of the engine-driven fuel pump. Also causal was the failure of the maintenance facility to overhaul the fuel pump and the failure of the operator to ensure that the pump was…
- [NTSB CEN11LA460](https://openairdocs.org/ntsb/CEN11LA460.md): Ayres S2R600 · Pine Bluff, AR · Accident · No injuries · Limited investigation · Final report · Jul 6, 2011 · N3101S · Substantial damage
  > The use of an incorrect mounting bolt by maintenance persons to attach the engine torque sensor, which resulted in an internal failure of the torque sensor and subsequent loss of engine power due to fuel starvation.
- [NTSB ERA11LA383](https://openairdocs.org/ntsb/ERA11LA383.md): Cessna 150L · Plymouth, MA · Accident · No injuries · Limited investigation · Final report · Jul 4, 2011 · N150ET · Substantial damage
  > A partial loss of engine power during initial climb due to a stuck cylinder valve, which resulted from excessive corrosion and carbon deposits on the valve springs due to inadequate maintenance.
- [NTSB WPR11LA290](https://openairdocs.org/ntsb/WPR11LA290.md): Christen Industries Pitts S-1T · Alkali Lake, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 2011 · N77MN · Substantial damage
  > The loss of engine oil during cruise flight due to the failure of the front bearing oil seal.
- [NTSB ENG11IA035](https://openairdocs.org/ntsb/ENG11IA035.md): Boeing 757-232 · Atlanta, GA · Incident · Minor injuries · Incident investigation · Final report · Jun 21, 2011 · N6714Q · No damage
  > Fuel leaking from the fuel flow transmitter that ignited on contact with the engine’s hot cases which resulted in an engine undercowl fire. The fuel leak resulted from the fuel flow transmitter end housing backing off from the main housing, creating a gap…
- [NTSB CEN11LA413](https://openairdocs.org/ntsb/CEN11LA413.md): Cessna 172N · Bedford Park, IL · Accident · No injuries · Limited investigation · Final report · Jun 18, 2011 · N172NT · Substantial damage
  > A loss of engine power due to a fractured push rod precipitated by a stuck exhaust valve.
- [NTSB CEN11LA404](https://openairdocs.org/ntsb/CEN11LA404.md): Ayres S2R-T34 · Athleimer, AR · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 2011 · N30902 · Substantial damage
  > Failure of the first stage planetary gearset in the propeller reduction gearbox, which resulted in catastrophic engine failure. Contributing to the failure was the misrepresentation of the gearset being zero-timed by the company that sold the gearset to the…
- [NTSB CEN11LA367](https://openairdocs.org/ntsb/CEN11LA367.md): Jones Cozy Mark IV · Sioux City, IA · Accident · Minor injuries · Limited investigation · Final report · May 30, 2011 · N204TJ · Substantial damage
  > The pilot's improper installation of the gascolator gasket during the airplane's last condition inspection, which resulted in a partial loss of engine power while maneuvering.
- [NTSB CEN11LA370](https://openairdocs.org/ntsb/CEN11LA370.md): Bell 47G-3B-1 · Lakeville, MN · Accident · Serious injuries · Limited investigation · Final report · May 25, 2011 · N96SH · Substantial damage
  > The loss of engine power due to a loose B-nut on the compressor discharge pressure bleed line.
- [NTSB ERA11LA216](https://openairdocs.org/ntsb/ERA11LA216.md): Hiller UH-12E · Culpeper, VA · Accident · No injuries · Limited investigation · Final report · Mar 25, 2011 · N4033P · Substantial damage
  > Mechanical failure of the transmission for reasons that could not be determined because the transmission could not be torn down.
- [NTSB ERA11LA204](https://openairdocs.org/ntsb/ERA11LA204.md): Robinson R22 · Goshen, NY · Accident · No injuries · Limited investigation · Final report · Mar 22, 2011 · N259TW · Substantial damage
  > The pilot’s failure to adhere to published preflight checklist limitations and procedures, resulting in excessive slack and subsequent failure of the power transmission belts and a total loss of rotor system drive.
- [NTSB ENG11IA021](https://openairdocs.org/ntsb/ENG11IA021.md): Bombardier DHC 8 402 · Pittsburgh, PA · Incident · No injuries · Incident investigation · Final report · Mar 17, 2011 · N339NG · Minor damage
  > the flight crew's delay in shutting down the left engine following an engine oil pressure master warning, which led to a hard rub inside the engine that served as an ignition point for a titanium fire. Contributing to the event was a PW150 No. 5 seal design…
- [NTSB WPR11LA167](https://openairdocs.org/ntsb/WPR11LA167.md): Rotorway A600 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Mar 15, 2011 · N602RW · Substantial damage
  > A design modification that changed the fasteners and components used to attach the main rotor drive pulley to the engine, which resulted in fatigue failure of those fasteners and a complete loss of power to the main rotor.
- [NTSB CEN11FA202](https://openairdocs.org/ntsb/CEN11FA202.md): Cessna T210M · Independence, MO · Accident · Minor injuries · Field investigation · Final report · Feb 24, 2011 · N6149B · Substantial damage
  > Latent dimensional discrepancies related to the engine crankcase main bearing saddle bores, which precipitated the fatigue failure of the crankshaft and a complete loss of engine power. Contributing to the accident was the engine manufacturer's failure to…
- [NTSB ERA11LA130](https://openairdocs.org/ntsb/ERA11LA130.md): Cirrus Design SR22 · Cross City, FL · Accident · No injuries · Limited investigation · Final report · Jan 28, 2011 · N8135B · Substantial damage
  > A total loss of engine power resulting from the failure of the camshaft due to fatigue cracks. Contributing to the accident was the inadequate quality inspection of the camshaft after initial manufacture.
- [NTSB WPR11LA102](https://openairdocs.org/ntsb/WPR11LA102.md): Piper PA-28-235 · San Luis Obispo, CA · Accident · No injuries · Limited investigation · Final report · Jan 20, 2011 · N8608W · Substantial damage
  > The loss of engine power due to the fatigue fracture of one attachment bolt for the left idler gear shaft, which resulted from an insufficient preload on both attachment bolts.
- [NTSB ERA11LA117](https://openairdocs.org/ntsb/ERA11LA117.md): Convair 340-71 · Charlotte Amalie · Accident · No injuries · Limited investigation · Final report · Jan 17, 2011 · N8277Q · Substantial damage
  > The captain’s decision to continue the flight with the left engine backfiring, resulting in an engine fire shortly after takeoff. Contributing to the accident were the captain’s decision to continue the flight following a report of black smoke trailing the…
- [NTSB ENG11IA011](https://openairdocs.org/ntsb/ENG11IA011.md): Boeing 737 · San Francisco, CA · Incident · No injuries · Incident investigation · Final report · Dec 25, 2010 · N248WN · No damage
  > The probable cause of the undercowl in-flight engine fire was the insufficient installation torque of the bolts that secure the fuel manifold cover to the fuel manifold. Engine vibrations and fuel pressure cycles caused the bolts to gradually loosen further…
- [NTSB WPR11LA070](https://openairdocs.org/ntsb/WPR11LA070.md): Bellanca 7KCAB · Corona, CA · Accident · Minor injuries · Limited investigation · Final report · Dec 2, 2010 · N11858 · Substantial damage
  > The total loss of engine power due to oil exhaustion as a result of a broken oil line.
- [NTSB CEN11CA030](https://openairdocs.org/ntsb/CEN11CA030.md): Conrad Theodore J Thorp T-18 · Fredericksburg, TX · Accident · No injuries · Data collection · Final report · Oct 13, 2010 · N86TJ · Substantial damage
  > The malfunction of the throttle clamp, which resulted in the pilot's inability to control the engine's power setting.
- [NTSB ERA10TA493](https://openairdocs.org/ntsb/ERA10TA493.md): Bell 412 · Brooklyn, NY · Accident · Minor injuries · Final report · Sep 22, 2010 · N412PD · Substantial damage
  > The fatigue fracture of the reduction gearbox output drive gear, which resulted in the loss of power output from the engines to the helicopter rotor blade system and a subsequent forced landing. The fracture of the output drive gear was caused by a fatigue…
- [NTSB CEN10CA541](https://openairdocs.org/ntsb/CEN10CA541.md): Aerolite Bearcat · Mineola, TX · Accident · Minor injuries · Data collection · Final report · Sep 15, 2010 · UNREG · Substantial damage
  > Failure of the oil injection pump resulting in a total loss of engine power.
- [NTSB WPR10LA413](https://openairdocs.org/ntsb/WPR10LA413.md): Grumman Acft ENG Cor-Schweizer G-164B · Buckeye, AZ · Accident · Serious injuries · Limited investigation · Final report · Aug 19, 2010 · N6607Q · Substantial damage
  > An increase in engine rpm and vibration, which resulted in an aborted takeoff and runway excursion. The reason for the increased engine rpm and vibration could not be determined because of postaccident fire damage.
- [NTSB ERA10LA376](https://openairdocs.org/ntsb/ERA10LA376.md): Beech K35 · Philadelphia, MS · Accident · No injuries · Limited investigation · Final report · Jul 26, 2010 · N6035E · Substantial damage
  > A throttle control malfunction during landing for undetermined reasons, resulting in a runway overrun.
- [NTSB ERA10LA362](https://openairdocs.org/ntsb/ERA10LA362.md): Garlick Helicopters OH-58A+ · Rowley, MA · Accident · No injuries · Limited investigation · Final report · Jul 15, 2010 · N802JB · Substantial damage
  > The failure of the power turbine governor internal driveshaft bearings, resulting in the failure of the governor.
- [NTSB CEN10CA398](https://openairdocs.org/ntsb/CEN10CA398.md): Bradshaw Quicksilver MX II · Newark, IL · Accident · No injuries · Data collection · Final report · Jul 1, 2010 · N4469N · Substantial damage
  > A total loss of engine power during cruise when the ignition switch vibrated into the "off" position, leading to the airplane's impact with a ditch during the off-field landing.
- [NTSB CEN10LA295](https://openairdocs.org/ntsb/CEN10LA295.md): Pitts Aerobatics S-2B · Amarillo, TX · Accident · Minor injuries · Limited investigation · Final report · May 29, 2010 · N260PK · Destroyed
  > The fracture of the fuel pump housing for undetermined reasons.
- [NTSB ERA10TA261](https://openairdocs.org/ntsb/ERA10TA261.md): Bell 407 · Abingdon, VA · Accident · No injuries · Final report · May 11, 2010 · N31VA · Substantial damage
  > The improper repair of an engine component by a repair facility, which resulted in a complete loss of engine power. Contributing to the accident was the failure of the repair facility to recognize that an improper repair had been accomplished, which allowed…
- [NTSB ERA10LA229](https://openairdocs.org/ntsb/ERA10LA229.md): Dalin Ronald K T-51 Mustang · Lakeland, FL · Accident · No injuries · Limited investigation · Final report · Apr 14, 2010 · N551RD · Substantial damage
  > The builder’s use of inadequate material for the exhaust manifold adapters resulting in heat damage and chafing of the crankshaft synchronizer and timing wires that rendered an inoperative ignition system and loss of engine power.
- [NTSB ERA10LA207](https://openairdocs.org/ntsb/ERA10LA207.md): Luciano Edison HA-2 Sportster · Humacao, PR · Accident · 1 fatal · Limited investigation · Final report · Apr 3, 2010 · N764EL · Substantial damage
  > The failure of the pilot to maintain control of the gyrocraft while maneuvering after takeoff. Contributing to the accident was the pilot’s operation of the gyrocraft with an inoperative right magneto.
- [NTSB CEN10LA188](https://openairdocs.org/ntsb/CEN10LA188.md): Beech 95 · Eden Prairie, MN · Accident · Serious injuries · Limited investigation · Final report · Apr 1, 2010 · N20FP · Substantial damage
  > The fatigue failure of an intake valve spring on the right engine, which resulted in a partial loss of engine power on takeoff.
- [NTSB CEN10CA172](https://openairdocs.org/ntsb/CEN10CA172.md): Kinney Kevin Zenith 601XL · Warren, OH · Accident · No injuries · Data collection · Final report · Mar 20, 2010 · N61601 · Destroyed
  > A total loss of engine power due to the failure of an oil hose due to improper installation of the hose.
- [NTSB ERA10LA175](https://openairdocs.org/ntsb/ERA10LA175.md): Smith Edward I Lancair IV-P · Hilton Head Island, SC · Accident · 1 fatal · Limited investigation · Final report · Mar 15, 2010 · N9JE · Minor damage
  > A loss of engine power due to the failure of the crankshaft as a result of a previous propeller strike.
- [NTSB CEN10LA123](https://openairdocs.org/ntsb/CEN10LA123.md): Cessna 172N · Genoa City, WI · Accident · Minor injuries · Limited investigation · Final report · Feb 14, 2010 · N24CV · Substantial damage
  > A total loss of engine power due to the failure of the bolts that held in place the connecting rods to the engine's No. 3 and No. 4 cylinders as a result of the engine overhaul facility's improper installation of the bolts during a recent overhaul.
- [NTSB WPR10LA128](https://openairdocs.org/ntsb/WPR10LA128.md): Piper PA-32R-301T · Dolan Springs, AZ · Accident · No injuries · Limited investigation · Final report · Feb 4, 2010 · N1060X · Substantial damage
  > The fuel flow divider inlet line nut coming loose during cruise flight, resulting in a fuel leak and in-flight fire. The root cause of the loose B-nut fitting could not be determined. Contributing to the accident was the pilot's decision to fly the airplane…
- [NTSB WPR10LA127](https://openairdocs.org/ntsb/WPR10LA127.md): Hiller UH-12E · Los Banos, CA · Accident · No injuries · Limited investigation · Final report · Feb 2, 2010 · N36MV · Substantial damage
  > A partial loss of engine power due to a failure of the throttle interconnect hardware, which resulted in a hard landing.
- [NTSB WPR10LA126](https://openairdocs.org/ntsb/WPR10LA126.md): Arrow Falcon Exporters OH-58A · Escalon, CA · Accident · Serious injuries · Limited investigation · Final report · Feb 2, 2010 · N9286U · Substantial damage
  > A loss of engine power during cruise flight due to the fatigue failure of the pneumatic fuel-to-governor control line. Also causal was the inadequate installation of the pneumatic line by maintenance personnel, and the pilot’s decision to continue flight with…
- [NTSB WPR10WA110](https://openairdocs.org/ntsb/WPR10WA110.md): Garlick TH1F · Canowindra, Australia · Accident · Serious injuries · Foreign investigation · Dec 23, 2009 · VH-UHD · No damage
  > On December 23, 2009, at 1850 local time, a Garlick TH-1F helicopter (modified Bell 204), Australian registry VH-UHD, registered to and operated by Coloundra Helicopter Center Pty, Ltd., collided with trees and terrain while maneuvering during an aerial fire…
- [NTSB WPR10FA056](https://openairdocs.org/ntsb/WPR10FA056.md): Beech A36 · San Gabriel, CA · Accident · 1 fatal · Field investigation · Final report · Nov 15, 2009 · N17803 · Substantial damage
  > Failure of the exhaust band V-clamp during cruise flight, which resulted in an in-flight fire and a subsequent forced landing.
- [NTSB DCA09WA078](https://openairdocs.org/ntsb/DCA09WA078.md): Robinson R44 · Annerdale, South Africa · Accident · No injuries · Foreign investigation · Sep 25, 2009 · ZS-RMN · Substantial damage
  > On September 25, 2009, about 2100 UTC, ZS-RMN, a Robinson R44, operated by National Airways Corporation, landed hard during an autorative landing near Annerdale, South Africa. The pilot and passenger were not injured. The helicopter was substantially damaged.…
- [NTSB ERA09LA510](https://openairdocs.org/ntsb/ERA09LA510.md): Socata TB 9 Tampi · Milner, GA · Accident · No injuries · Limited investigation · Final report · Sep 8, 2009 · N135ER · Substantial damage
  > The failure of the No. 3 cylinder exhaust valve for undetermined reasons.
- [NTSB CEN09LA574](https://openairdocs.org/ntsb/CEN09LA574.md): Grumman Acft ENG Cor-Schweizer G-164A · Kimball, NE · Accident · No injuries · Limited investigation · Final report · Sep 8, 2009 · N6761Q · Substantial damage
  > A loss of engine power due to improper installation of an oil line fitting resulting in oil depletion.

Next page: https://openairdocs.org/ntsb-events/340/cases.md?page=12

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '340')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/340/cases?page=11

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